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March 28, 2017

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Alice is three times as old as Jack. In 10 years she will be twice as old as Jack. How old are Alice and Jack now? How old will they be in10 years

  • Math - ,

    A = 3J

    A + 10 = 2(J + 10)

    Substitute 3J for A in second equation and solve for J. Insert that value into the first equation and solve for A. Check by inserting both values into the second equation.

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